649020711 has 8 divisors (see below), whose sum is σ = 865674864. Its totient is φ = 432523520.

The previous prime is 649020703. The next prime is 649020719. The reversal of 649020711 is 117020946.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (649020703) and next prime (649020719).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 649020711 - 2³ = 649020703 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (649020719) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29226 + ... + 46391.

It is an arithmetic number, because the mean of its divisors is an integer number (108209358).

Almost surely, 2^649020711 is an apocalyptic number.

649020711 is a deficient number, since it is larger than the sum of its proper divisors (216654153).

649020711 is a wasteful number, since it uses less digits than its factorization.

649020711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78481.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 649020711 is about 25475.8848914027. The cubic root of 649020711 is about 865.8038618541.

The spelling of 649020711 in words is "six hundred forty-nine million, twenty thousand, seven hundred eleven".